From: Jan Niehusmann <jan@gondor.com>
To: linux-kernel@vger.kernel.org, Adam Morrison <mad@cs.technion.ac.il>
Cc: Omer Peleg <omer@cs.technion.ac.il>, Shaohua Li <shli@fb.com>,
Ben Serebrin <serebrin@google.com>,
David Woodhouse <David.Woodhouse@intel.com>
Subject: [PATCH] iommu/vt-d: fix overflow of iommu->domains array
Date: Fri, 3 Jun 2016 16:52:13 +0200 [thread overview]
Message-ID: <20160603145213.GA2889@x61s.reliablesolutions.de> (raw)
In-Reply-To: <20160602102443.GA21132@jannic.reliablesolutions.de>
The valid range of did in get_iommu_domain(*iommu, did)
is 0..cap_ndoms(iommu->cap), so don't exceed that
range in free_all_cpu_cached_iovas().
Signed-off-by: Jan Niehusmann <jan@gondor.com>
---
drivers/iommu/intel-iommu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index a644d0c..82989d4 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -4600,7 +4600,7 @@ static void free_all_cpu_cached_iovas(unsigned int cpu)
if (!iommu)
continue;
- for (did = 0; did < 0xffff; did++) {
+ for (did = 0; did < cap_ndoms(iommu->cap); did++) {
domain = get_iommu_domain(iommu, did);
if (!domain)
--
2.1.4
prev parent reply other threads:[~2016-06-03 14:52 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-02 10:24 Suspend broken on Thinkpad x201s since 4.7-rc1 Jan Niehusmann
2016-06-03 14:52 ` Jan Niehusmann [this message]
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